Anyone have more pictures of the water pump outlet block, standalone
and installed on plane? Trying to see the clearance with a side
throttle attached. From the picture online, it looks like 2 tapped
ports on the side. The top one for temp and/or pressure sensor and
the bottom one for the coolant overflow bottle return? You'd almost
need a 90' bend on the bottom tapped port to clear the side I'm
guessing.

I see some people have nice metal welded overflow tanks, anything in
particular to look for regarding aviation?

I attached a little coolant flow diagram I found on the web. Gives
you an idea on flow direction.

Matt Boiteau

Here are a few.

I have some dwgs in IGES or STEP if you have Rhino or Solid Works.

I have come to the conclusion it is possible to move the slide
throttle out far enough to clear a tubing bend. The RX8 p-port idles
much better with the side exhaust ports so no need to keep the slide
throttle so close to the block.

Some Corvettes had nice metal over flow tanks.

Paul Lamar

Paul,

I sent some pics of the H2O block with slide throttle on my 20b in a
separate email.

Mark S.

I think I have them. They are on the bottom of the front page of the
website. I assumed Matt saw them.

Paul Lamar



Hi Mark, yes I saw the pictures on the website. Thank you.
Paul, when you say to clear the tubing bend, are you talking about the stock housing ?

Matt Boiteau

The stock is too difficult to use in an aircraft with slide throttle.

The bottom hole is the main problem.

Burns Stainless has 1.25 OD 2 inch center line radius tubing that
could be tig welded to a flange.

The 2 and 3/8th OD has a 2.5 inch center line radius.

 There are some other options depending on what kind of airplane
you are building.  If you tell me I can work up a 3D and see what
fits.

Paul Lamar


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